From: Youlin Wang wangyoulin1@hisilicon.com
Adds DT bindings documentation for the hikey960-i2s driver and audio card device.
Signed-off-by: Youlin Wang wangyoulin1@hisilicon.com Signed-off-by: Tanglei Han hantanglei@huawei.com Signed-off-by: Guangke Ji jiguangke@huawei.com Signed-off-by: Feng Chen puck.chen@hisilicon.com Signed-off-by: Kaihua Zhong zhongkaihua@huawei.com Signed-off-by: Jun Chen chenjun14@huawei.com Signed-off-by: John Stultz john.stultz@linaro.org Signed-off-by: Yiping Xu xuyiping@hisilicon.com Signed-off-by: Pengcheng Li lipengcheng8@huawei.com --- .../bindings/sound/hisilicon,hi3660-i2s.txt | 49 ++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/hisilicon,hi3660-i2s.txt
diff --git a/Documentation/devicetree/bindings/sound/hisilicon,hi3660-i2s.txt b/Documentation/devicetree/bindings/sound/hisilicon,hi3660-i2s.txt new file mode 100644 index 0000000..654c234 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/hisilicon,hi3660-i2s.txt @@ -0,0 +1,49 @@ +* Hisilicon 6210 i2s controller + +Required properties: + +- compatible: should be one of the following: + - "hisilicon,hi3660-i2s-1.0" +- reg: physical base address of the i2s controller unit and length of + memory mapped region. +- interrupts: should contain the i2s interrupt. +- clocks: a list of phandle + clock-specifier pairs, one for each entry + in clock-names. +- clock-names: should contain following: + - "dacodec" + - "i2s-base" +- dmas: DMA specifiers for tx dma. See the DMA client binding, + Documentation/devicetree/bindings/dma/dma.txt +- dma-names: should be "tx" and "rx" +- hisilicon,sysctrl-syscon: phandle to sysctrl syscon +- #sound-dai-cells: Should be set to 1 (for multi-dai) + +Example for the hi3660 i2s controller: + + i2s2: hisi_i2s { + compatible = "hisilicon,hi3660-i2s-1.0"; + reg = <0x0 0xe804f800 0x0 0x400>, + <0x0 0xe804e000 0x0 0x400>; + pinctrl-names = "default"; + pinctrl-0 = <&i2s2_pmx_func &i2s2_cfg_func>; + dmas = <&asp_dmac 18 &asp_dmac 19>; + dma-names = "rx", "tx"; + #sound-dai-cells = <0>; + }; + + sound { + compatible = "simple-audio-card"; + simple-audio-card,name = "hikey-hdmi"; + simple-audio-card,format = "i2s"; + + simple-audio-card,bitclock-master = <&sound_master>; + simple-audio-card,frame-master = <&sound_master>; + + sound_master: simple-audio-card,cpu { + sound-dai = <&i2s2>; + }; + + simple-audio-card,codec { + sound-dai = <&adv7533>; + }; + };